84 Teeth Sprockets | McMaster-Carr

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	Number of Teeth Number of Teeth	Hide

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	System of Measurement System of Measurement

Inch

Metric

	For Shaft Diameter For Shaft Diameter

	OD OD

	ID ID

	Pitch Pitch

	Material Material

Steel

Plastic

	Roller Chain Trade Size Roller Chain Trade Size

	For Roller Chain Strand Type For Roller Chain Strand Type


Single	Double

	Bore Type Bore Type

	Overall Width Overall Width

	Component Component

	Gear

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	For Shaft Type For Shaft Type

Round

Keyed

	Roller Chain Standard Roller Chain Standard

ANSI

ISO

DIN

	Sprocket Type Sprocket Type

Standard

	Hub Diameter Hub Diameter

	For Maximum Shaft Diameter For Maximum Shaft Diameter

	Specifications Met Specifications Met

ISO

DIN

	Keyway Depth Keyway Depth

	Keyway Width Keyway Width

	Shaft Mount Type Shaft Mount Type

Set Screw

	Gear Pitch Diameter Gear Pitch Diameter

3 1/2"

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21 Products

About Roller Chain and Sprockets

About Gears

With Keyway

Mount these sprockets onto your shaft and secure with a set screw—no machining necessary.

For technical drawings and 3-D models, click on a part number.

For ANSI 41 Roller Chain (1/2" Pitch)

					Keyway
Number of Teeth	For Shaft Dia.	OD	Overall Wd.	Hub Dia.	Wd.	Dp.	Material	Includes		Each
84	3/4"	13.66"	1 3/16"	4"	3/16"	3/32"	Steel	Two Set Screws	00000000	0000000
84	1"	13.66"	1 3/16"	4"	1/4"	1/8"	Steel	Two Set Screws	00000000	000000
84	1 1/4"	13.66"	1 3/16"	4"	1/4"	1/8"	Steel	Two Set Screws	00000000	000000
84	1 3/8"	13.66"	1 3/16"	4"	5/16"	5/32"	Steel	Two Set Screws	00000000	000000
84	1 1/2"	13.66"	1 3/16"	4"	3/8"	3/16"	Steel	Two Set Screws	00000000	000000

Sprockets for Metric Roller Chain

Designed to meet ISO 606 and DIN 8187 international dimensional standards, these sprockets are for use with compatible ISO and DIN roller chain. They come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size.

For technical drawings and 3-D models, click on a part number.

For DIN, ISO 06B Roller Chain (9.53 mm Pitch)
Number of Teeth	For Shaft Dia., mm	For Max. Shaft Dia., mm	OD, mm	Overall Wd., mm	Hub Dia., mm	Material	Specifications Met		Each
84	19	45	260.3	30	75	Steel	DIN 8187, ISO 606	00000000	0000000
For DIN, ISO 08B Roller Chain (12.7 mm Pitch)
84	19	64	347.04	35	100	Steel	DIN 8187, ISO 606	00000000	000000
For DIN, ISO 10B Roller Chain (15.88 mm Pitch)
84	25	70	433.83	44	108	Steel	DIN 8187, ISO 606	00000000	000000
For DIN, ISO 12B Roller Chain (19.05 mm Pitch)
84	32	80	521.23	50	120	Steel	DIN 8187, ISO 606	00000000	000000

Flat Sprockets for Metric Roller Chain

With metric teeth and slim profile, these sprockets allow your ISO roller chain to reach narrow spaces. They're commonly referred to as A-plate sprockets. Machine the unfinished bore to fit your shaft—sprockets come machined to the shaft diameter listed and are machinable up to the maximum shaft diameter size. Sprockets meet DIN 8187 and ISO 606, international standards for sprockets and roller chains.

For technical drawings and 3-D models, click on a part number.

For ISO 08B Roller Chain (12.7 mm Pitch)
Number of Teeth	For Shaft Dia., mm	For Max. Shaft Dia., mm	OD, mm	Overall Wd., mm	Material	Specifications Met		Each
84	18	326	346.46	8	Steel	DIN 8187, ISO 606	00000000	0000000
For ISO 10B Roller Chain (15.875 mm Pitch)
84	24	408	433.83	9	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 12B Roller Chain (19.05 mm Pitch)
84	32	492	519.68	12	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 16B Roller Chain (25.4 mm Pitch)
84	40	656	694.18	17	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 20B Roller Chain (31.75 mm Pitch)
84	40	820	867.66	19	Steel	DIN 8187, ISO 606	00000000	000000

Sprockets for Double-Strand Metric Roller Chain

The double row of teeth on these sprockets are designed to fit into metric ISO double-strand roller chain. They have an unfinished bore that’s machined to the shaft diameter size listed. Machine them to fit any shaft up to the maximum shaft diameter size. The extended hub makes these sprockets more stable and more durable than flat sprockets. They meet ISO 606 (formerly DIN 8187), which is an international standard for sprocket and roller chain dimensions and materials.

For technical drawings and 3-D models, click on a part number.

For ISO 06B Roller Chain (9.53 mm Pitch)
Number of Teeth	For Shaft Dia., mm	For Max. Shaft Dia., mm	OD, mm	Overall Wd., mm	Hub Dia., mm	Material	Specifications Met		Each
84	19	60	260.3	38	90	Steel	DIN 8187, ISO 606	0000000	0000000
For ISO 08B Roller Chain (12.7 mm Pitch)
84	30	80	347.01	45	120	Steel	DIN 8187, ISO 606	00000000	000000

Taper-Lock Bushing-Bore Sprockets for Metric Roller Chain

While their teeth fit into metric ISO roller chain, these sprockets use taper-lock bushings to grip shafts. That means you can switch to a different diameter shaft by changing the bushing instead of machining the sprocket. Bushings mount flush inside these sprockets; secure them in place by tightening the set screws included with the bushings. These sprockets have an extended hub that makes them more stable and durable than flat sprockets. All meet ISO 606 (formerly DIN 8187), which is an international standard for sprocket and roller chain dimensions and materials.

For technical drawings and 3-D models, click on a part number.

For Single-Strand Roller Chain

For ISO 08B Roller Chain (12.7 mm Pitch)
Number of Teeth	For Bushing Style	OD, mm	Overall Wd., mm	Hub Dia., mm	Material	Specifications Met		Each
84	2012	346.46	32	90	Steel	DIN 8187, ISO 606	00000000	0000000
For ISO 10B Roller Chain (15.88 mm Pitch)
84	2517	433.83	44	107.95	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 12B Roller Chain (19.05 mm Pitch)
84	2517	519.68	44	107.95	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 16B Roller Chain (25.4 mm Pitch)
84	3020	694.18	51	133.35	Steel	DIN 8187, ISO 606	00000000	000000

Plastic Gears and Gear Racks—14 1/2° Pressure Angle

A former industry standard, 14½° pressure angle gears are often found on older machinery. Made of plastic, they run quieter than metal gears and have good corrosion and chemical resistance. They’re also known as spur gears.

Combine gears with different numbers of teeth to change speed and torque in your assembly. Combine a gear and rack to convert rotary motion into linear motion.

For components to mesh correctly, they must have the same pressure angle and pitch.

For technical drawings and 3-D models, click on a part number.

Gears

Gear with Round or
Round/Machinable
Bore

										Hub
Gear Pitch	Number of Teeth	Gear Pitch Dia.	OD	Face Wd.	Overall Wd.	For Shaft Dia.	Material	Fabrication	Color	Dia.	Wd.		Each
Round Bore
24	84	3 1/2"	3.58"	5/16"	0.563"	3/8"	Nylon Plastic	Molded	White	0.844"	0.25"	00000000	000000

About Roller Chain and Sprockets

About Gears

Sprockets for ANSI Roller Chain

Sprockets for Metric Roller Chain

Flat Sprockets for Metric Roller Chain

Sprockets for Double-Strand Metric Roller Chain

Taper-Lock Bushing-Bore Sprockets for Metric Roller Chain

Plastic Gears and Gear Racks—14 1/2° Pressure Angle